tests/unit-tests/SimplifyingNodeFactory_Test.cpp

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#include "stp/cpp_interface.h"
#include "stp/Parser/parser.h"
#include <gtest/gtest.h>
#include <stdio.h>


  const std::string start_input = R"(
  (set-logic QF_BV)
  (set-info :smt-lib-version 2.0)
  (set-info :category "check")
  (set-info :status sat)

  (declare-fun v0 () (_ BitVec 20))
  (declare-fun v1 () (_ BitVec 20))
  (declare-fun v2 () (_ BitVec 20))
  (declare-fun v3 () (_ BitVec 20))
  (declare-fun v4 () (_ BitVec 20))

  (declare-fun x0 () (_ BitVec 1))

  (declare-fun a () Bool)
  (declare-fun b () Bool)
  (declare-fun c () Bool)

  (push 1)
  )";

struct Context
{
   stp::STPMgr mgr;
   SimplifyingNodeFactory snf;
   stp::Cpp_interface interface;

   Context() :
   snf (*(mgr.hashingNodeFactory), mgr),
   interface(mgr, &snf)
   { 
    mgr.defaultNodeFactory = &snf;
    interface.startup();
    stp::GlobalParserBM = &mgr;
    stp::GlobalParserInterface = &interface;
   }
   
   ASTNode process(std::string input)
   {
      stp::SMT2ScanString((start_input + input).c_str());
      stp::SMT2Parse();
      // TODO assert it was parsed properly.
      smt2lex_destroy();
      ASTNode n = mgr.CreateNode(stp::AND, mgr.GetAsserts());
      std::cerr << n;
      return n;
    }
};


TEST(SimplifyingNodeFactory_Test, a)
{
  const std::string input = R"(
    (assert (and a a a a) )
    )";

  Context c;
  ASTNode n = c.process(input);
  ASSERT_EQ(n, c.mgr.LookupOrCreateSymbol("a"));
}

TEST(SimplifyingNodeFactory_Test, b)
{
  const std::string input = R"(
    (assert (and a a a (not a)) )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTFalse);
}

TEST(SimplifyingNodeFactory_Test, c)
{
  const std::string input = R"(
    (assert (and (not a) a a a ) )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTFalse);
}

TEST(SimplifyingNodeFactory_Test, d)
{
  const std::string input = R"(
    (assert ( = (and a b a c b a  a a a )  (and  a b c a b ))  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}

TEST(SimplifyingNodeFactory_Test, e)
{
  const std::string input = R"(
    (assert ( = (= a b )  (= b a ))  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}

TEST(SimplifyingNodeFactory_Test, f)
{
  const std::string input = R"(
    (assert ( = (= v0 v1 )  (= v1 v0 ))  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}


TEST(SimplifyingNodeFactory_Test, i)
{
  const std::string input = R"(
    (assert (and a (not a) )  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTFalse);
}

TEST(SimplifyingNodeFactory_Test, j)
{
  const std::string input = R"(
    (assert (and (not a) a )  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTFalse);
}





TEST(SimplifyingNodeFactory_Test, n)
{
  const std::string input = R"(
    (assert (or (not a) a )  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}

TEST(SimplifyingNodeFactory_Test, n0)
{
  const std::string input = R"(
    (assert (= a  (or a a a a a ) ))
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}


TEST(SimplifyingNodeFactory_Test, n1)
{
  const std::string input = R"(
    (assert (= (or b a)  (or a a b a a b a ) ))
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}



TEST(SimplifyingNodeFactory_Test, bvand0)
{
  const std::string input = R"(
    (assert (= (bvand v0 v1 v0 v1 v0) (bvand v0 v1)  )  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}
TEST(SimplifyingNodeFactory_Test, bvand1)
{
  const std::string input = R"(
    (assert (= (bvand v0 v1 v1 (bvnot v0) ) (_ bv0 20) )  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}
TEST(SimplifyingNodeFactory_Test, bvand2)
{
  const std::string input = R"(
    (assert (= (bvand v0 v1 v0 v1) (bvand v0 v1)  )  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}
TEST(SimplifyingNodeFactory_Test, bvand3)
{
  const std::string input = R"(
    (assert (= (bvand v0 (bvnot v0) ) (_ bv0 20) )  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}


TEST(SimplifyingNodeFactory_Test, bvand4)
{
  const std::string input = R"(
    (assert 
      (= (bvand v0 (bvnot v1) (bvneg v1) (bvneg v0) (bvneg v1) (bvnot v0) ) 
      (_ bv0 20) )  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}





TEST(SimplifyingNodeFactory_Test, bvor0)
{
  const std::string input = R"(
    (assert (= (bvor v0 v1 v0 v1 v0) (bvor v0 v1)  )  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}
TEST(SimplifyingNodeFactory_Test, bvor1)
{
  const std::string input = R"(
    (assert (= (bvor v0 v1 v1 (bvnot v0) ) (bvnot (_ bv0 20)) )  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}
TEST(SimplifyingNodeFactory_Test, bvor2)
{
  const std::string input = R"(
    (assert (= (bvor v0 v1 v0 v1) (bvor v0 v1)  )  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}
TEST(SimplifyingNodeFactory_Test, bvor3)
{
  const std::string input = R"(
    (assert (= (bvor v0 (bvnot v0) ) ( bvnot (_ bv0 20)) )  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}




TEST(SimplifyingNodeFactory_Test, xor0)
{
  const std::string input = R"(
    (assert ( = (xor a b a c b a a a a )  (xor  a b c a b ))  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}

TEST(SimplifyingNodeFactory_Test, xor1)
{
  const std::string input = R"(
    (assert ( = (xor a b a c b a a a a )  (xor  c a b c c a b ))  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}

TEST(SimplifyingNodeFactory_Test, xor2)
{
  const std::string input = R"(
    (assert ( = (xor (not a ) (not b))  (xor  a b  ))  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}

TEST(SimplifyingNodeFactory_Test, xor3)
{
  const std::string input = R"(
    (assert ( = (xor a (not b))  (xor  (not a) b  ))  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}



TEST(SimplifyingNodeFactory_Test, bvxor0)
{
  const std::string input = R"(
    (assert ( = (bvxor v1 v0 v1 v0)   (bvxor  v0 v1 v1 v1 v1 v0 v0 v0 ))  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}

TEST(SimplifyingNodeFactory_Test, bvxor1)
{
  const std::string input = R"(
    (assert ( = (bvxor (bvnot v0) v1 )  (bvxor (bvnot v1) v0))  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}

TEST(SimplifyingNodeFactory_Test, bvxor2)
{
  const std::string input = R"(
    (assert ( = (bvxor v1 (bvnot v0) v1 v1 v0 )  (bvnot v1))  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}


TEST(SimplifyingNodeFactory_Test, bvgt)
{
  const std::string input = R"(
    (assert ( = (bvult v0 (_ bv1 20) )  (= v0 (_ bv0 20)))  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}



TEST(SimplifyingNodeFactory_Test, bvplus0)
{
  const std::string input = R"(
    (assert ( = (bvadd v1 (bvneg v1) v1 )   v1)  )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}

TEST(SimplifyingNodeFactory_Test, bvplus1)
{
  const std::string input = R"(
      (assert (= 
                (bvadd v1 (bvneg v1) (bvneg v1) v1 v1 (bvnot v1) v1 )   
                (bvsub v1 (_ bv1 20))  
               )
      )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}

TEST(SimplifyingNodeFactory_Test, bvplus2)
{
  const std::string input = R"(
      (assert (= 
                (bvadd v1 (_ bv1 20) (bvneg v1) (bvneg v1) (_ bv1 20) v1 v1 (bvnot v1) v1 (_ bv0 20) )   
                 (bvadd v1 (_ bv1 20) )
               )
      )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}

TEST(SimplifyingNodeFactory_Test, bvplus3)
{
  const std::string input = R"(
      (assert (= 
                (bvadd v1 (_ bv0 20) (_ bv0 20) (_ bv0 20)  )   
                 v1
               )
      )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}

TEST(SimplifyingNodeFactory_Test, bvplus4)
{
  const std::string input = R"(
      (assert (= 
                (bvadd v1 v2 (_ bv0 20)   )   
                 (bvadd v1 v2 )
               )
      )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}


TEST(SimplifyingNodeFactory_Test, bvplus5)
{
  const std::string input = R"(
      (assert (= 
                (bvadd (bvneg (bvneg (bvneg v1) ))  v1   )   
                 (_ bv0 20)  
               )
      )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}

TEST(SimplifyingNodeFactory_Test, bvplus6)
{
  const std::string input = R"(
      (assert (= 
                (bvadd (bvnot (bvnot (bvnot v1) ))  v1   )   
                 (bvnot (_ bv0 20)  )
               )
      )
    )";

   Context c;
   ASTNode n = c.process(input);
   ASSERT_EQ(n, c.mgr.ASTTrue);
}